Car-truck.



G. E. SCOTT.

CAR TRUCK.

APPLICATION FILED JAN. 11. 1915.

Patented Apr. 13, 1915.

J41 JO UNITED STATES PATENT OFFICE.

GEORGE E. SCOTT, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STEEL FOUNDBIES,

OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

CAR-TRUCK.

Specification of Letters Patent.

Patented Apr. 13, 1915.

To all whom it may concern Be it known that I, GEORGE E. Soon, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification.

My invention relates to car trucks and has particular reference to a novel arch bar side frame construction.

It has heretofore been the custom to build arch bar side frames with top and bottom bars spaced apart by struts which act as columns which guide and retain the-bolster. It has also been the custom to cast such columns with a longitudinal aperture through which a long column bolt is passed. Because of the thinness of the section of the column and the relatively large size of the hole necessary to accommodate a bolt which will withstand the severe strains the section of the metal between the face of the column and the side of the bolt has been very slight, with the result that breakage occurs, this break many times extending six or seven inches from the end of the column thereby exposing and bending the column bolt.

There is no way to obviate thisdifliculty in the thousands of trucks now in service except by providing new arch bars in which the column bolt holes are spaced apart a greater distance than before, and by providing lcolumns having a greater section of meta pense. I propose to obviate the difliculty in a simple manner by providing a column having integral threaded extensions to which a fastening nut may be applied, thereb eliminating the necessity for a bolt. Sue columns may be readily inserted in place of the broken ones already in service, and a strong and durable construction provided.

The invention will be more readily understood by reference to the accompanying drawings wherein:

Figure 1 is a side elevation of an arch bar truck to which my improvements have been applied; Fig. 2 is a transverse section of the construction shown in Fig. 1; and Fig. 3 is a fragmentary bottom plan view.

Referring more particularly to the drawings it will be seen that I provide the usual top arch bar 10 and bottom bar 11 constituting the frame members of the side frame.

This would entail an enormous ex-' The two frames of the truck are united by a spring plank 12 which in the present instance is channel shaped. Acting as struts for the truss and as columns for guiding the bolster are castings 13 formed of generally channel shape at their intermediate portions, and at their top and bottom portions having flanged seats 14 for engagement with the arch bars. Formed integrally with the columns are studs 15 peripherally threaded and adapted to enter the usual column bolt openings in the arch bars. Nuts 16 are applied at top and bottom and serve to secure the parts in position. The columns are provided with the usual ears 17 through which rivets 18 extend, securing the spring plank thereto.

By the use of such construction the diflicultiesheretofore referred to are eliminated and a strong, durable construction is provided without the usual drawbacks. Obviously the construction may be modified in certain particulars and such modifications as are within the scope of my claims I consider within the spirit of my invention.

, I claim:

1. In an arch bar truck-the combination of top and bottom bars having spaced apertures, columns, and studs formed integral with said columns and adapted to enter the apertures in said bars, said studs being threaded and provided with nuts, substantially as described.

2. A column for arch bar trucks consisting in a casting, and integral studs projectin from each end of said casting, said studs being threaded to accommodate a fastening nut, substantially as described.

3. A column for arch bar trucks consisting in a channel-shaped member having integral studs projecting from each end thereof, said studs being threaded on their peripheries to accommodate a fastening nut, substantially as described.

4. A column for arch bar trucks consisting in a casting having seats at each end for top and bottom arch bars, integral studs projecting from said seats, and fastening nuts engaging said studs, substantially as descrlbed.

GEORGE E. SCOTT. Witnesses J. F. LYNN, Gno. G. FLOYD. 

